7969879 has 4 divisors (see below), whose sum is σ = 7975584. Its totient is φ = 7964176.

The previous prime is 7969877. The next prime is 7969901. The reversal of 7969879 is 9789697.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7969879 - 2¹ = 7969877 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7969877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819 + ... + 4075.

It is an arithmetic number, because the mean of its divisors is an integer number (1993896).

Almost surely, 2^7969879 is an apocalyptic number.

7969879 is a deficient number, since it is larger than the sum of its proper divisors (5705).

7969879 is a wasteful number, since it uses less digits than its factorization.

7969879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704.

The product of its digits is 1714608, while the sum is 55.

The square root of 7969879 is about 2823.0974124178. The cubic root of 7969879 is about 199.7486759801.

The spelling of 7969879 in words is "seven million, nine hundred sixty-nine thousand, eight hundred seventy-nine".